This is a general-purpose, surface-mount diode from MSK Semiconductors. It is known for being a 1N4007 with a voltage rating of 1kV (1000 Volts) and a forward current rating of 1 Amp (1A). The reverse current rating is 10 µA (10 Microamperes) at 1kV. It is packaged in a RoHS-compliant SOD-123FL package.